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1. The gills of this insect nymph are located inside a special chamber (rectum) within its abdomen. The nymph breathes by drawing water in and out of its hind end.
A.
B.
2. This decapod is omnivorous, feeding upon vegetation or preying upon snails and other macroinvertebrates and small fish. It has two defense mechanisms. It has large claws on its first pair of legs for pinching. Also, it has expendable legs. When this creature is attacked, muscles in the walking legs may contract at creases and may break off. The missing legs regenerate with molt.
3. This aquatic insect has long oar-like hind legs used for swimming and feeds by inserting its beak into its prey and sucking out its bodily fluids.